Question: Who is the {skyscraper} for {based on} of {Flatiron Building}
Paraphrase: Who is the {high rise} for {based on} of {Flatiron Building}
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P144 wd:Q220728 . ?sbj wdt:P31 wd:Q11303 } 
Answer: Het Strijkijzer